CN114917455A - Guiding catheter inner core and no-sheath guiding catheter system - Google Patents
Guiding catheter inner core and no-sheath guiding catheter system Download PDFInfo
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- CN114917455A CN114917455A CN202110818662.XA CN202110818662A CN114917455A CN 114917455 A CN114917455 A CN 114917455A CN 202110818662 A CN202110818662 A CN 202110818662A CN 114917455 A CN114917455 A CN 114917455A
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- 239000002861 polymer material Substances 0.000 claims description 21
- 239000007769 metal material Substances 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 210000002321 radial artery Anatomy 0.000 description 10
- 210000000078 claw Anatomy 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 210000004351 coronary vessel Anatomy 0.000 description 4
- 230000002792 vascular Effects 0.000 description 4
- 210000001105 femoral artery Anatomy 0.000 description 3
- 230000003902 lesion Effects 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000013146 percutaneous coronary intervention Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002608 intravascular ultrasound Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09116—Design of handles or shafts or gripping surfaces thereof for manipulating guide wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09125—Device for locking a guide wire in a fixed position with respect to the catheter or the human body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09133—Guide wires having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a guide catheter inner core, which comprises an inner core tube and a quick joint, wherein the quick joint is arranged at the near end of the inner core tube and is connected with the inner core tube through a bendable push rod, the quick joint comprises a base and clamping jaws, the clamping jaws are distributed on the periphery of the base in a circle, and a side seam notch which extends in a straight line towards the center direction of the base is further arranged on the outer wall of the base and is used for placing a guide wire in the side seam notch. The invention also discloses a sheath-free guide catheter system, which comprises a Y valve, a guide catheter, a guide wire and the inner core of the guide catheter; the quick connector is clamped on a handle at the near end of the Y valve or on the near end of the guide catheter through a clamping jaw. Compared with the prior art, the guiding catheter inner core can be rapidly sent in and withdrawn for many times, and the problem that the patient cannot stop bleeding due to the fact that the Y valve is detached is avoided.
Description
Technical Field
The invention relates to a medical instrument, in particular to an inner core of a guide catheter and a sheath-free guide catheter system.
Background
The access mode of percutaneous coronary artery interventional therapy can be divided into femoral artery access and radial artery access, and compared with femoral artery access, the radial artery access has the advantages that: fewer puncture related complications, reduced patient discomfort and reduced hospital stays. But radial access also has significant drawbacks: due to the anatomical features of the radial artery, a large lumen guiding catheter cannot be used. When a patient is subjected to interventional therapy from the radial artery on the same side for multiple times, the inner cavity of the radial artery vessel of the patient is further reduced, and the incidence rate of radial artery occlusion is increased along with the increase of the outer diameter of a vascular sheath. Thus, in clinical applications, trans-radial interventions basically employ 5F or 6F vascular sheaths and guiding catheters. However, when complicated left main trunk lesion, bifurcation lesion, and severe calcification lesion are encountered, the operation risk is high, and usually special procedures (such as double stent, double balloon anastomosis, etc.), special instruments (intravascular ultrasound, rotational abrasion, etc.) and stronger supporting force are required, and most of the patients are forced to enter the femoral artery due to the requirements of 7F sheath and guiding catheter.
The unsheathed technique is a technique for directly sending a guide catheter to a coronary artery port through a radial artery puncture point to complete Percutaneous Coronary Intervention (PCI) without passing a blood vessel sheath in intervention treatment, wherein the outer diameter of the blood vessel sheath is 1-2F larger than that of the guide catheter with the same specification, so that the radial artery can bear the guide catheter with a larger specification under the situation of no sheath, and the bottleneck of traditional radial artery intervention is solved. At present, in the process of treating through a radial artery by adopting a sheath-free technology, the connection between a Y valve and a guide catheter or the connection between an inner core of the guide catheter and the guide catheter needs to be detached, but the existing inner core tube is a tubular structure with the length matched with that of the guide catheter and is used for supporting the guide catheter and enhancing the moving strength of the guide catheter, and the near end of the inner core tube is provided with a connector which is in threaded connection with the near-end connector of the guide catheter. The inner core tube is drawn out before operation, the operation is performed after the Y valve is installed, if the inner core tube needs to be used again to support the guide catheter, the inner core tube needs to be inserted again, but because the length of the existing inner core tube is larger than 115.5cm, the residual length of the near end of the guide wire is smaller than that of the inner core tube during insertion, the long guide wire needs to be replaced, and the guide wire can be sent into the inner core tube. In addition, the existing long guide wire is not long enough when the inner core tube is installed on the guide catheter provided with the Y valve, the Y valve needs to be detached, the inner core tube is installed again, the inner core tube is used, the inner core tube is drawn out, and the Y valve is installed, so that the problem is caused. Because of cost concerns, hospitals generally do not have long guidewires, and manufacturers do not have elongated guidewires that fit the length of the trunk after the combination of the guiding catheter, Y-valve, and guiding catheter core.
Disclosure of Invention
The invention aims to provide a guiding catheter inner core and a sheath-free guiding catheter system, and aims to solve the technical problems of realizing the quick disassembly and assembly of the guiding catheter inner core, facilitating the operation in an operation and shortening the operation time.
In order to solve the problems, the invention adopts the following technical problems: the utility model provides a guide pipe inner core, includes the inner core pipe, still includes quick-operation joint, and quick-operation joint sets up at the near-end of inner core pipe and is connected with the inner core pipe through flexible push rod, and quick-operation joint includes a base, jack catch, and the jack catch distributes in the peripheral a week of base, still is equipped with the side seam breach towards the central direction straight line extension of base on the outer wall of base to be arranged in the side seam breach with the seal wire.
Further, the near end of the base is provided with a handle, a handle notch communicated with the side seam notch is arranged at the position, opposite to the side seam notch, of the handle, and the handle notch is arranged along the length direction of the handle so as to penetrate through the end face of the near end of the handle.
Further, the end head of the near end of the inner core tube is an inclined plane.
Further, the distal end of the inner core tube is tapered.
Further, the pipe wall of the inner core pipe is provided with at least one layer.
Further, the inner core tube is made of a polymer material or a metal material. .
Further, when the wall of the inner core tube is a layer, the inner core tube is made of a high polymer material; when the pipe wall of the inner core pipe is at least two layers, at least one layer is made of high polymer materials, and the rest are made of high polymer or metal materials.
Further, the push rod is made of metal, high polymer or composite material.
Further, when the push rod is made of a metal material, the metal material is nickel-titanium alloy or stainless steel; when the push rod is made of high polymer material, the high polymer material is polytetrafluoroethylene or polyimide; when the push rod is made of the composite material, the composite material is formed by winding nickel-titanium alloy wires with polytetrafluoroethylene coatings.
The invention also discloses a sheath-free guide catheter system, which comprises a Y valve, a guide catheter, a guide wire and the inner core of the guide catheter; the quick connector is clamped on a handle at the near end of the Y valve or on the near end of the guide catheter through the clamping jaws so as to realize the quick connection and fixation of the inner core of the guide catheter and the Y valve or the guide catheter respectively, the far end of the inner core tube is pushed out from the far end of the guide catheter, the far end of the guide wire extends out from the far end of the inner core tube, and after the near end of the guide wire extends out from the near end of the Y valve, part of a guide wire body of the guide wire, which is positioned outside the near end of the Y valve, is arranged in the side seam gap.
Compared with the prior art, the invention has the advantages that the quick coupling with the clamping jaws is connected at the near end of the inner core tube through the push rod, and the quick coupling is clamped with the edge of the handle at the near end of the Y valve or directly clamped with the near end of the guide catheter.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the quick connector of the present invention.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a right side view of fig. 2.
Fig. 5 is a schematic view of the structure of the inventive unsheathed guiding catheter system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
In the present invention, distal end refers to the end remote from the operator; proximal refers to the end near the operator.
As shown in fig. 1, the invention discloses a guiding catheter inner core, which comprises an inner core tube 3, a push rod 2 and a quick coupling 1, wherein the quick coupling 1 is arranged at the proximal end of the inner core tube 3 and is connected with the inner core tube 3 through the push rod 2, the push rod 2 is of a bendable structure, the inner core tube 3 is of a hollow tubular structure for a guide wire to pass through a lumen of the inner core tube 3, the quick coupling 1 comprises a base 11 and jaws 12, the jaws 12 are distributed on the periphery of the base 11, a side seam notch 13 linearly extending towards the center direction of the base 11 is further arranged on the outer wall of the base 11 for placing the guide wire in the side seam notch 13, and as shown in fig. 3, the side seam notch 13 penetrates through the end faces of the proximal end and the two end faces of the distal end of the base 11; the inner core tube 3 is used for conveying guide wires and increasing the supporting force of the guide catheter, the near end of the push rod 2 is fixed in a hole in the center of the base 11, and the far end of the push rod 2 is fixed on the wall of the through hole of the inner core tube 3.
The push rod 2 may be a rod-shaped structure or a tubular structure formed by weaving a plurality of filaments, but the present invention is not limited thereto, and may be a solid rod-shaped structure or a tubular structure formed by at least one tube wall.
As shown in fig. 1, the latch 12 includes an L-shaped portion 121 and a hook 122, the hook 122 is disposed on a distal side of the base 11, the latch 12 has elasticity, so that when the quick connector 1 is latched in the Y valve, the latch 12 can be guided by a proximal edge of the Y valve to open; as shown in fig. 2, a guide surface 123 is provided on the hook 122 to further guide the claw 12.
As shown in fig. 1 and 2, a handle 14 is provided at the proximal end of the base 11, the handle 14 is a columnar structure, a handle notch 15 communicated with the side seam notch 13 is provided at a position where the handle 14 is opposite to the side seam notch 13, the handle notch 15 is provided along the length direction of the handle 14 so as to penetrate through the end surface of the proximal end of the handle 14, so that a part of the filament body of the guide wire 3 can be placed in the handle notch 15 and the side seam notch 13; specifically, grooves 16 are provided on the handle 14 at spaced intervals around the circumference to increase the friction of the handle 14.
As shown in fig. 1 and 3, in order to reduce the volume of the base 11, the base 11 is a circular plate-shaped structure, the claws 12 are distributed around the edge of the base 11, and preferably three claws 12 are arranged and spaced at equal intervals.
As shown in fig. 1, in the structure of the inner core tube 3, the proximal end of the inner core tube 3 is an inclined plane, and the distal end of the inner core tube 3 is tapered; the distal end of the push rod 2 is fixedly connected to the wall of the lumen at the proximal end of the inner core tube 3, when the push rod 2 is stuck in the wall of the lumen of the inner core tube 3, the inner diameter of the inner core tube 3 is larger than the sum of the diameter of the push rod 2 and the diameter of the guide wire, so as to ensure that the guide wire can pass through the inner hole of the inner core tube 3, when the push rod 2 is stuck outside the wall of the lumen of the inner core tube 3, the inner diameter of the inner core tube 3 is larger than the diameter of the guide wire, it needs to be noted that the diameter of the guide wire is determined according to the diameter of the conventional guide wire, the diameter of the push rod 2 is set according to actual needs, and only the residual space in the lumen of the inner core tube 3 can be provided for the guide wire to pass through after the push rod 2 is connected with the inner core tube 3; in the present invention, the tube wall of the inner core tube 3 is provided with at least one layer, but the present invention is not limited thereto, and a single-layer tubular structure or a tubular structure of at least one layer of tube wall woven from filaments may be employed. .
The inner core tube 3 is made of high polymer materials or metal materials; when the wall of the inner core tube 3 is a layer, the inner core tube is made of high polymer material; when the pipe wall of the inner core pipe 3 is at least more than two layers, at least one layer is made of high polymer materials, and the rest are made of high polymer or metal materials; the metal material can be nickel-titanium alloy or stainless steel; .
In the present invention, the total length of the guiding catheter inner core can be changed according to the lengths of the guiding wire, the guiding catheter and the Y valve in practical use, i.e. the length of the present invention should be smaller than the length of the guiding wire-the guiding catheter-the Y valve in the prior art, so as to adapt to the guiding wire, the guiding catheter and the Y valve. For example, in clinical application, the most commonly used guide wire in hospitals is 1.5m in length, while the guide catheter is 107cm in length, the Y valve is 8.5cm in length, and the total length of the invention is less than 34.5 cm; however, the present invention is not limited to this size, and this embodiment is only an example according to the size of a hospital equipment, and therefore, the total length of the present invention is not particularly limited thereto. The size of the inner core tube 3 is determined according to the length of the guiding catheter, and only in order to ensure the length of the inner core tube 3 providing the supporting force for the guiding catheter, the length of the inner core tube 3 in the embodiment is adapted to the head end and the bending section of the guiding catheter, and may be 10-20 cm. It should be emphasized that this embodiment is described as an example only, and if there are other instruments used on the guiding catheter or the guiding catheter itself has a hemostatic effect, they can cooperate with the guiding catheter inner core provided in the present invention, so as to achieve the effect of rapidly changing the position of the guiding catheter many times without replacing the guiding wire during the operation.
In the present invention, the push rod 2 is made of metal, polymer or composite material; when the push rod 2 is made of a metal material, the metal material is nickel titanium alloy (Niti) or stainless steel; when the push rod 2 is made of a high polymer material, the high polymer material is Polytetrafluoroethylene (PTFE) or Polyimide (PI); when the push rod 2 is made of a composite material, the composite material is formed by winding nickel titanium alloy (Niti) wires with a Polytetrafluoroethylene (PTFE) coating.
As shown in fig. 5, the present invention further discloses a sheath-less guiding catheter system, which comprises a Y valve 4, a guiding catheter 5, a guide wire 6, and the guiding catheter inner core, wherein the structure of the guiding catheter inner core is described in detail in the foregoing, and is not described again; the quick connector 1 is clamped on a handle at the proximal end of the Y valve 4 or the proximal end of the guide catheter 5 through a claw 12 to realize quick connection and fixation of the inner core of the guide catheter, the distal end of the inner core tube 3 is pushed out from the distal end of the guide catheter 5, the distal end of the guide wire 6 extends out from the distal end of the inner core tube 3, the proximal end of the guide wire 6 extends out from the proximal end of the Y valve 4, then the guide wire 6 is lapped in a side seam notch 13, and when the Y valve is sent in or pulled out, the claw 12 is clamped on the edge at the proximal end of the Y valve 4 or the claw 12 is separated from the Y valve 4 through pulling or pushing of a handle 14.
In the present invention, the proximal surface of the guiding catheter 5 may be provided with a rough surface or a raised annular structure to achieve a stable grip of the claws 12 on the proximal end of the guiding catheter 5. The diameter of the inscribed circle between the claws 12 is slightly larger than the diameter of the guide catheter 5 and the handle at the proximal end of the Y-valve 4.
When the invention is used, the guide wire 6 is fed through the vascular sheath; withdrawing the vascular sheath, and delivering the inner core of the guide catheter and the guide catheter 5 into the body along the guide wire 6; after the guiding catheter 5 reaches the ascending aorta, the guiding catheter inner core is withdrawn; connecting the guide catheter 5 with the Y valve 4; operating a guiding catheter to reach the coronary artery opening; in the operation process, if the guide catheter inner core and the guide wire 6 are required to be fed again, the guide catheter inner core and the guide wire 6 are fed again through the Y valve 4, and the claw 12 is clamped on the handle at the near end of the Y valve 4; after the operation is finished, the guide catheter 5 is withdrawn from the coronary artery opening, the guide wire 6 and the guide catheter inner core are sent again, and the novel guide catheter is gradually withdrawn along the guide wire.
When the inner core of the guide catheter is withdrawn, the Y valve does not need to be unscrewed, the inner core of the guide catheter can be rapidly sent and withdrawn for multiple times, the operation is reduced, the operation time is shortened, the radiation exposure time and the contrast agent dosage are reduced, and the Y valve does not need to be unscrewed, so that the patient can be guaranteed to be stopped bleeding; and only the guide wire with the prior common length specification is needed in the operation.
Claims (10)
1. A guiding catheter inner core comprises an inner core tube (3), and is characterized in that: still include quick-operation joint (1), quick-operation joint (1) sets up the near-end in inner core pipe (3) and is connected with inner core pipe (3) through flexible push rod (2), quick-operation joint (1) includes a base (11), jack catch (12) distribute in the peripheral a week of base (11), still be equipped with on the outer wall of base (11) side seam breach (13) towards the central direction straight line extension of base (11) for place the seal wire in side seam breach (13).
2. A guiding catheter inner core according to claim 1, wherein: the near-end of base (11) is equipped with handle (14), and handle (14) and relative department of side seam breach (13) are equipped with handle breach (15) with side seam breach (13) intercommunication, and handle breach (15) set up along the length direction of handle (14) to the terminal surface of the near-end of running through handle (14).
3. The guiding catheter inner core according to claim 1, wherein: the near-end of the inner core tube (3) is an inclined plane.
4. A guiding catheter inner core according to any of claims 1-3, wherein: the far end of the inner core pipe (3) is conical.
5. A guiding catheter inner core according to claim 4, wherein: at least one layer is arranged on the pipe wall of the inner core pipe (3).
6. The guiding catheter inner core according to claim 5, wherein: the inner core pipe (3) is made of a high polymer material or a metal material.
7. A guiding catheter inner core according to claim 6, wherein: when the pipe wall of the inner core pipe (3) is a layer, the inner core pipe is made of high polymer materials; when the pipe wall of the inner core pipe (3) is at least two layers, at least one layer is made of high polymer materials, and the rest are made of high polymer or metal materials.
8. A guiding catheter inner core according to claim 1, wherein: the push rod (2) is made of metal, high polymer or composite material.
9. A guiding catheter inner core according to claim 8, wherein: when the push rod (2) is made of a metal material, the metal material is nickel-titanium alloy or stainless steel; when the push rod (2) is made of high polymer material, the high polymer material is polytetrafluoroethylene or polyimide; when the push rod (2) is made of composite material, the composite material is formed by winding nickel-titanium alloy wires with polytetrafluoroethylene coatings.
10. A sheathless guiding catheter system, comprising a Y-valve (4), a guiding catheter (5), a guide wire (6), characterized in that: further comprising an inner core of the guide catheter of any of claims 1-9; the quick connector (1) is clamped on a handle at the near end of the Y valve (4) or on the near end of the guide catheter (5) through a clamping jaw (12) to realize quick connection and fixation of an inner core of the guide catheter and the Y valve (4) or the guide catheter (5) respectively, the far end of the inner core tube (3) is pushed out from the far end of the guide catheter (5), the far end of the guide wire (6) extends out from the far end of the inner core tube (3), and after the near end of the guide wire (6) extends out from the near end of the Y valve (4), part of the guide wire body, located outside the near end of the Y valve (4), of the guide wire (6) is placed in the side seam notch (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818662.XA CN114917455B (en) | 2021-07-20 | Guide catheter inner core and sheathing-free guide catheter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818662.XA CN114917455B (en) | 2021-07-20 | Guide catheter inner core and sheathing-free guide catheter system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114917455A true CN114917455A (en) | 2022-08-19 |
| CN114917455B CN114917455B (en) | 2024-06-21 |
Family
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| CN108261252A (en) * | 2016-12-30 | 2018-07-10 | 先健科技(深圳)有限公司 | Intraluminal stent and transport system |
| CN108057167A (en) * | 2017-11-30 | 2018-05-22 | 封建立 | A kind of soft head end ureter guide sheath |
| CN209004195U (en) * | 2018-08-07 | 2019-06-21 | 深圳市康医博科技发展有限公司 | A kind of novel ureter negative pressure taking stone guide sheath |
| CN109700565A (en) * | 2018-12-27 | 2019-05-03 | 东莞先健畅通医疗有限公司 | Conveying device and system |
| CN109621160A (en) * | 2019-01-17 | 2019-04-16 | 天津商业大学 | A kind of auxiliary holding device of medical guiding wire |
| CN210785922U (en) * | 2019-09-17 | 2020-06-19 | 深圳市金慧医疗科技有限公司 | Guide wire booster |
| CN112755363A (en) * | 2020-02-20 | 2021-05-07 | 苏州恒瑞迪生医疗科技有限公司 | Micro-catheter system |
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